commit 9dfeba6a61a929c3dc459a1d0352b8eada00d5ef
Author: Nong Li <nong@cloudera.com>
Date:   Wed Jul 10 19:38:20 2013 -0700

    Updates from more ScanNode cleanup.

commit fa4ac79147ae1cccb7f66e6d114dbde5e6ca3a91
Author: Nong Li <nong@cloudera.com>
Date:   Sat Jul 6 14:54:08 2013 -0700

    Updates from scan-node cleanup.

commit ff5000d730277e5fd1e8ff61d3d00fc1f0aece9c
Author: Skye Wanderman-Milne <skye@cloudera.com>
Date:   Wed May 15 15:48:46 2013 -0700

    Move row batch management out of ScannerContext and into HdfsScanner.

commit 40ca12958bf91886d5d9a025cefaddef7e9e0edb
Author: Nong Li <nong@cloudera.com>
Date:   Tue Jun 11 16:05:03 2013 -0700

    Update use of ReadWriteUtil

commit 75d3fa7d4e989d389ef1b279aee1225f5024a050
Author: Nong Li <nong@cloudera.com>
Date:   Sat May 18 14:19:22 2013 -0700

    Add mem limit to lzo scanner.